What skills do you need to have to be a good gambler? I mean lucky when I talk about it. Is there a real chance to learn how to make money on such games?

I suppose there is no particular problem in learning how to gamble. I've seen hundreds of books with rules for every occasion. All you need is regular practice. The easiest way is to use an online casino for this. Here, try this site - https://playamo-casino.fun/ You will see progress even if you only devote an hour a day to the site.